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Compac CNG Installation And Service Manual

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Meter Calibration
Loading Post Calibration
Compac Industries Ltd.
Page 40
www.compacngv.com
Loading Post Calibration
Meter Calibration
Calibrating the meter involves:
Comparing the loading posts stated amount dispensed to actual
amount dispensed.
Adjusting the K-Factor if accuracy is not within the required
tolerance.
The K-Factor for each new loading post is factory set
and usually does not need to be changed.
Test the meter accuracy
Record the loading posts current density factor and set it to read out in
kg Density Factor (dSF) (see page 18)
1. Test the meter accuracy using Calibration Test Fill Procedure -
Method 1 (see page 41) or Calibration Test Fill Procedure - Method
2 (see page 41)
Calculate the meter K-Factor
1. Make sure that the loading post is idle, with the nozzle in its holster.
2. Press and release the K-Factor switch nine times.
The display shows the K-Factor as F X.XXXX (single nozzle loading
post) or FA X.XXXX (Side A of a dual nozzle loading post).
To view the K-Factor for side B, quickly press and release the K-
Factor switch eight more times when viewing side A. The display
shows Fb X.XXXX (side B of a dual nozzle loading post).
With a dual loading post, it’s easier to set side A first.
3. Calculate the new K-Factor with the following formula:
New K-Factor = Existing K-Factor x True quantity
Displayed amount
For example:
Existing K-Factor = 0.98
Displayed amount = 5.80 kg
True quantity = 6.00 kg
New K-Factor = 0.98 x 6.00
5.80
= 1.0138 (4 decimal places)
Input loading post settings
1. Input the new meter K-factor (FA ) (see page 18)
Set the density factor back to its original value. (dSF) (see page 18)

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Compac CNG Specifications

General IconGeneral
BrandCompac
ModelCNG
CategoryDispenser
LanguageEnglish

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